What I'm wondering is how often windows rechecks it's activation status online.
I have a retail copy of Win7. I have an install of this on my old motherboard one one hard disc (waiting to be deleted once I've pulled my data from it), and then I upgraded so I've got my current install on my new motherboard on my new SSD. I activated the old one back when I installed it, and then after the upgrade activated the new one, which as I understand it should 'move' the activation as you can only have one copy of the OS installed at a time. So far so good.
Now the fly in the ointment, the chipset on my new motherboard isn't the right one to get the most out of my 3570K (H77 vs Z77, there's not a lot of explicit details in the specs to say "use this one for unlocked multipliers" ) so a replacement might be in order and I can see two ways of it playing out.
-One is a straight swap, going straight to the replacement and I wouldn't anticipate any problem with windows activations.
-The other would be temporarily going back to the old windows install on the old hardware, but I could see problems with windows if it rechecks it's activation status because it would see I've activated other hardware.
Would there be any problems with moving activations around so often (3 times: to new hardware, back to old, back to new)? Does windows only check once at install time and that's it (I doubt it) or very infrequently? Can you 'blind' activation to the internet so it can't check to see it's been activated elsewhere, or just use some other kind of 'unofficial method' to keep the old install happy while the replacement is happening (old install is going to be nuked eventually regardless)?
I miss the days when it was just a CD key and that was it.